Sun Odyssey 30i Keel and centerboard

Sailboat specifications

The Sun Odyssey 30i is a 28’10” (8.79m) cruising sailboat designed by Marc Lombard Yacht Design Group (France). She was built since 2008 (and now discontinued) by Jeanneau (France). The Keel and centerboard version features a centerboard inside of a short fin-keel allowing shoal draft while maintaining upwind capabilities.

The Sun Odyssey 30i is as well listed, on Boat-Specs.com, in Performance and Deep draft version (see all the versions compared).

Sun Odyssey 30i's main features

Model: Sun Odyssey 30i
Version: Keel and centerboard
Hull type: Monohull
Category: Cruising sailboat
Sailboat builder: Jeanneau
Sailboat designer: Marc Lombard Yacht Design Group
Sailboat range: Sun Odyssey
Country: France
Construction: GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich fiberglass polyester
First built hull: 2008
Last built hull: Discontinued
Appendages: Centerboard : pivoting centerboard in the keel
Helm: Single tiller
Rudder: Twin spade rudders
Unsinkable: No
Trailerable: No
EC design category iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions) A: Wind < force 9, Waves < 10m B: Wind < force 8, Waves < 8m C: Wind < force 6, Waves < 4m D: Wind < force 4, Waves < 0,5m: B
Standard public price ex. VAT (indicative only): N/A €

Sun Odyssey 30i's main dimensions

Overall length: 29’ 6”8.99 m
Hull length: 28’ 10”8.79 m
Waterline length: 27’ 1”8.26 m
Beam (width): 10’ 5”3.18 m
Draft: 2’ 10”0.85 m
Draft when appendages up: 6’ 7”2 m
Mast height from D_WL: 47’ 2”14.4 m
Light displacement (M_LC): 8907 lb4040 kg
Ballast weight: 2291 lb1039 kg
Ballast type: Cast iron exterior ballast with steel centerboard

Sun Odyssey 30i's rig and sails

Upwind sail area: 463 ft²43 m²
Downwind sail area: 1046 ft²97.2 m²
Mainsail area: 239 ft²22.2 m²
Genoa area: 224 ft²20.8 m²
Symmetric spinnaker area: 807 ft²75 m²
I iFore triangle height (from mast foot to fore stay top attachment): 40’ 5”12.3 m
J iFore triangle base (from mast foot to bottom of forestay): 10’ 7”3.22 m
P iMainsail hoist measurement (from tack to head): 37’ 8”11.48 m
E iMainsail foot measurement (from tack to clew): 11’ 10”3.6 m
Rigging type: Sloop Marconi 9/10
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 2
Spreaders angle: Swept-back
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire

Sun Odyssey 30i's performances

Upwind sail area to displacement iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds. The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.: 182 ft²/T16.95 m²/T
Downwind sail area to displacement iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds. The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.: 412 ft²/T38.32 m²/T
Displacement-length ratio (DLR) iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet). The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.: 203
Ballast ratio iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared. The higher the ballast ratio is, the greater is the stability.: 26 %
Critical hull speed iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed". The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.: 6.98 knots